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Semiconductor codes

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Turnip:
Hi folks,

Got what looks like a standard NPN SM transistor coded W1A - any idea what it is  ?  Thanks - Chris.

AGC:
Hi
You no show type case.It is very significant.
Usually index W- made in China.

Turnip:
Hi AGC and thanks,

What you suggest accounts for my problem - will attach a picture - Semi in question Q28

Many thanks - Chris.

Keith:
Hi Chris,

If the one next to it measures like an NPN you could try a general purpose BC846 or BC847.

Keith

Turnip:
Hi Keith and thanks,

Gather it's equivalent to 2N3904 - thanks again - Chris.

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